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  <div class="section" id="s-django-2-1-1-release-notes">
<span id="django-2-1-1-release-notes"></span><h1>Django 2.1.1 release notes<a class="headerlink" href="#django-2-1-1-release-notes" title="Permalink to this headline">¶</a></h1>
<p><em>August 31, 2018</em></p>
<p>Django 2.1.1 fixes several bugs in 2.1.</p>
<div class="section" id="s-bugfixes">
<span id="bugfixes"></span><h2>Bugfixes<a class="headerlink" href="#bugfixes" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Fixed a race condition in <code class="docutils literal notranslate"><span class="pre">QuerySet.update_or_create()</span></code> that could result
in data loss (<a class="reference external" href="https://code.djangoproject.com/ticket/29499">#29499</a>).</li>
<li>Fixed a regression where <code class="docutils literal notranslate"><span class="pre">QueryDict.urlencode()</span></code> crashed if the dictionary
contains a non-string value (<a class="reference external" href="https://code.djangoproject.com/ticket/29627">#29627</a>).</li>
<li>Fixed a regression in Django 2.0 where using <code class="docutils literal notranslate"><span class="pre">manage.py</span> <span class="pre">test</span> <span class="pre">--keepdb</span></code>
fails on PostgreSQL if the database exists and the user doesn’t have
permission to create databases (<a class="reference external" href="https://code.djangoproject.com/ticket/29613">#29613</a>).</li>
<li>Fixed a regression in Django 2.0 where combining <code class="docutils literal notranslate"><span class="pre">Q</span></code> objects with <code class="docutils literal notranslate"><span class="pre">__in</span></code>
lookups and lists crashed (<a class="reference external" href="https://code.djangoproject.com/ticket/29643">#29643</a>).</li>
<li>Fixed translation failure of <code class="docutils literal notranslate"><span class="pre">DurationField</span></code>’s “overflow” error message
(<a class="reference external" href="https://code.djangoproject.com/ticket/29623">#29623</a>).</li>
<li>Fixed a regression where the admin change form crashed if the user doesn’t
have the ‘add’ permission to a model that uses <code class="docutils literal notranslate"><span class="pre">TabularInline</span></code>
(<a class="reference external" href="https://code.djangoproject.com/ticket/29637">#29637</a>).</li>
<li>Fixed a regression where a <code class="docutils literal notranslate"><span class="pre">related_query_name</span></code> reverse accessor wasn’t set
up when a <code class="docutils literal notranslate"><span class="pre">GenericRelation</span></code> is declared on an abstract base model
(<a class="reference external" href="https://code.djangoproject.com/ticket/29653">#29653</a>).</li>
<li>Fixed the test client’s JSON serialization of a request data dictionary for
structured content type suffixes (<a class="reference external" href="https://code.djangoproject.com/ticket/29662">#29662</a>).</li>
<li>Made the admin change view redirect to the changelist view after a POST if
the user has the ‘view’ permission (<a class="reference external" href="https://code.djangoproject.com/ticket/29663">#29663</a>).</li>
<li>Fixed admin change view crash for view-only users if the form has an extra
form field (<a class="reference external" href="https://code.djangoproject.com/ticket/29682">#29682</a>).</li>
<li>Fixed a regression in Django 2.0.5 where <code class="docutils literal notranslate"><span class="pre">QuerySet.values()</span></code> or
<code class="docutils literal notranslate"><span class="pre">values_list()</span></code> after combining querysets with <code class="docutils literal notranslate"><span class="pre">extra()</span></code> with
<code class="docutils literal notranslate"><span class="pre">union()</span></code>, <code class="docutils literal notranslate"><span class="pre">difference()</span></code>, or <code class="docutils literal notranslate"><span class="pre">intersection()</span></code> crashed due to
mismatching columns (<a class="reference external" href="https://code.djangoproject.com/ticket/29694">#29694</a>).</li>
<li>Fixed crash if <code class="docutils literal notranslate"><span class="pre">InlineModelAdmin.has_add_permission()</span></code> doesn’t accept the
<code class="docutils literal notranslate"><span class="pre">obj</span></code> argument (<a class="reference external" href="https://code.djangoproject.com/ticket/29723">#29723</a>).</li>
</ul>
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